package com.itheima.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.OrderItem;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.pojo.*;
import com.itheima.service.DeptService;
import com.itheima.service.EmpService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.*;
import java.util.stream.Collectors;

@Slf4j
@RestController
@RequestMapping("/emps")
public class EmpController {
    @Autowired
    private EmpService empService;
    @Autowired
    private DeptService deptService;

    @GetMapping
    public Result page(EmpQueryParam param) {
        log.info("员工列表查询条件：{}", param);

        // 调用Service层查询分页数据
        LambdaQueryWrapper<Emp> lqw = new LambdaQueryWrapper<>();
        //select * from emp where name like '%?%' and gender = ? and entry_date between ? and ?;
        lqw.like(param.getName() != null&& !param.getName().isEmpty(),Emp::getName,param.getName());
        lqw.eq(param.getGender()!=null,Emp::getGender,param.getGender())
                .between(param.getBegin()!=null&&param.getEnd()!=null,Emp::getEntryDate,param.getBegin(),param.getEnd());
        Page<Emp> page = new Page<>(param.getPage(), param.getPageSize());
        page = empService.page(page,lqw);
        page.addOrder(OrderItem.desc("update_time"));
        List<Emp> emps = page.getRecords();
        Set<Integer> setDepts = emps.stream().map(Emp::getDeptId).filter(Objects::nonNull).collect(Collectors.toSet());
        List<Dept> depts = new ArrayList<>();
        if (!setDepts.isEmpty()) {
            depts = deptService.listByIds(setDepts);
        }
        Map<Integer, String> collect = depts.stream().collect(Collectors.toMap(Dept::getId, Dept::getName));
        for (Emp emp : emps) {
            emp.setDeptName(collect.get(emp.getDeptId()));
        }
        PageResult pageResult = new PageResult(page.getTotal(), emps);
        // 返回结果
        return Result.success(pageResult);
    }

    @PostMapping
    public Result save(@RequestBody Emp emp) {
        log.info("新增员工，员工信息：{}", emp);

        // 调用service层方法保存员工信息和员工的工作经历信息
        empService.saveEmp(emp);

        return Result.success();
    }

    @DeleteMapping
    public Result delete(@RequestParam List<Integer> ids) {
        log.info("批量删除学生，{}", ids);

        // 调用service层方法批量删除员工信息和员工工作经历信息

        empService.deleteEmpByIds(ids);

        return Result.success();
    }

    @GetMapping("/{id}")
    public Result getById(@PathVariable Integer id) {
        log.info("根据ID查询员工信息，id：{}", id);
 Emp emp = empService.getEmpById(id);
        return Result.success(emp);
    }

    @PutMapping
    public Result update(@RequestBody Emp emp) {
        log.info("修改员工信息，员工信息：{}", emp);
            empService.updateEmp(emp);

        // 调用service层方法修改员工信息
        return Result.success();
    }

    @GetMapping("/list")
    public Result list() {
        log.info("查询员工列表");

        // 调用service层方法查询员工列表
        return Result.success();
    }
}
